KR20190007926A - Tool for Inside and outside chamfering of pipe, and a chamfering device having the same - Google Patents

Abstract

The present invention relates to an inside and outside chamfering tool for a pipe and a chamfering device having the same. Disclosed are the chamfering tool and the chamfering device having the chamfering tool including a shank; an insertion portion formed at the front end of the shank and entering the inside of the pipe; an inside chamfering unit including a first protruding portion protruding from the outer peripheral surface of the rear end of the insertion portion and a first cutting blade formed at the front end of the first protruding portion and cutting the inside corner of the pipe; and an outside chamfering unit arranged at the same interval along the circumference of the insertion portion with the inside chamfering unit, including a second protruding portion protruding from the outer peripheral surface of the rear end of the insertion portion and a second cutting blade formed at the front end of the second protruding portion, and cutting the outside corner of the pipe. With chamfering tool of the present invention, the inside and outside corners of a pipe can be simultaneously chamfered. In addition, the inside chamfering unit and the outside chamfering unit are separately formed, and thus manufacturing can be facilitated. The cutting blades of the inside chamfering unit and the outside chamfering unit are formed at the front ends of the respective protruding portions and are exposed to the outside, and thus a blunt cutting blade can be polished with ease and reuse can be facilitated.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tool for inserting an inner side and an outer side of a pipe and a chamfering apparatus having the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tool for inner and outer side faces of a pipe and a chamfering device having the same and, more particularly, to a tool and a chamfering device having the same, will be.

As a technique relating to a pipe finishing tool, Korean Patent Laid-Open Publication No. 10-2012-0088288 (published on Aug. 8, 2012, hereinafter referred to as "prior art") is presented.

The prior art

"In a chamfered drill used to chamfer the end of a pipe,

The chamfered drill is provided at the center and inserted into the inner diameter of the pipe to guide the center of the pipe and the chamfered drill to coincide with each other.

A plurality of cutting edges provided at the rear of the center portion and uniformly divided around the center portion, an inner diameter cut portion provided at a distal end face of the cutting edge and formed to have a certain depth rearward from the outer side of the center portion, A cutting portion having an outer diameter cutting portion provided at a predetermined spacing from the cutting portion; And

An axis provided at the rear of the cutting portion and fixed to the chamfer;

Quot; is characterized by "

In the prior art, although the inner diameter of the pipe and the chamfering of the diameter can be simultaneously performed by providing the inner diameter cutting portion and the outer diameter cutting portion in the cutting portion,

The inner diameter cutting portion and the outer diameter cutting portion are mutually recessed in one cutting portion and are difficult to manufacture due to their being formed together and it is difficult to re-grind the inner diameter cutting portion and the outer diameter cutting portion which are dull and reusable.

[Patent Document 1] Korean Published Patent Application No. 10-2012-0088288 (Published August 8, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cutting tool and a chamfering device having the same, which is capable of simultaneously chamfering the inner and outer edges of the pipe, .

In order to solve the above-mentioned problems, according to the present invention,

Shank;

An insertion portion formed at a front end portion of the shank and entering the inside of the pipe;

A first protrusion formed on an outer circumferential surface of a rear end of the insertion portion and a first cutting edge formed on a front end of the first protrusion to cut an inner edge of the pipe; And

A second protrusion formed on the outer circumferential surface of the rear end of the insertion portion and formed at a front end of the insertion portion, and a second cutting edge formed at the front end of the insertion portion, And an outer side mounting portion for cutting the outer edge.

In order to solve the above-mentioned problems, according to the present invention,

A base frame;

A support installed on an upper surface of the base frame to support a pipe;

A motor provided on the base frame so as to be disposed in front of the support;

A chuck coupled to a rotation axis of the motor so as to be disposed on the same center line as the pipe placed in the support; And

And an abutment tool according to claim 1 attached to the chuck.

The tool for facing according to the present invention not only can chamfer inner and outer edges of a pipe at the same time but also can be easily manufactured because the inner side mounting portion and the outer side mounting portion are formed separately and the inner side mounting portion and the outer side mounting portion The cutting edge is formed at the front end of each protrusion and is exposed to the outside, so that the dulled cutting edge can be easily polished and reuse is facilitated.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of an inner and outer side surface of a pipe according to an embodiment of the present invention; Fig.
BACKGROUND OF THE INVENTION Field of the Invention [0001]
3 is a front structural view of a tool for inserting the inside and outside of the pipe according to another embodiment of the present invention;
4 is a side view of the inner and outer chamfering devices of the pipe according to the embodiment of the present invention.
FIG. 5 is a side view of an inner and outer chamfering device of a pipe according to another embodiment of the present invention; FIG.
6 is a front structural view of an inner and outer chamfering device of a pipe according to another embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a pipe inner and outer side facing tool 100 according to an embodiment of the present invention includes a shank 110, an inserting portion 120, an inner side fitting portion 130, (140).

The shank 110 serves as a shank for securing the facing tool 100 of the present invention to a chuck, such as a shank of a bite, a drill, or the like.

The insertion portion 120 is formed at the front end portion of the shank 110 and allows the pipe 10 to enter the inside of the pipe 10 during chamfering of the pipe 10 to maintain a constant position with respect to the tool 100 Let's do it.

The insertion portion 120 is formed to have a circular cross section. Accordingly, damage to the inner peripheral surface of the pipe 10 due to the rotation of the insertion portion 120 can be minimized.

The insertion portion 120 is formed so that the outer peripheral surface of the front end portion is inclined so as to smoothly enter the inside of the pipe 10.

The inner side fitting part 130 is for cutting the inner side edge 11 of the pipe 10 and includes a first protrusion 131 protruding from the outer peripheral surface of the rear end of the insertion part 120, And a first cutting edge 132 formed at the front end.

The first cutting edge 132 is inclined forward from the outer end of the first projection 131 toward the inner end so that the inner edge 11 of the pipe 10 is chamfered by the rotation of the tool 100 .

The outer side attaching portion 140 is for cutting the outer edge 12 of the pipe 10 and includes a second protrusion 141 protruding from the outer circumferential surface of the rear end portion of the insertion portion 120 and a second protrusion 141 protruding from the second protrusion 141 And a second cutting edge 142 formed at the front end.

The second cutting edge 142 is inclined from the outer end of the second projection 141 toward the inner end so that the outer edge 12 of the pipe 10 is chamfered by abduction of the tool 100 .

The first cutting edge 132 of the inner side mounting part 130 and the second cutting edge 142 of the outer side mounting part 140 are formed in the shape of the pipe 10 at the chamfering of the pipe 10 by the tool 100, The inner edge 11 and the outer edge 12 of the pipe 10 are formed so as to be chamfered at the same time by being disposed in contact with the inner edge 11 and the outer edge 12. [

The inner side attachment portion 130 and the outer side attachment portion 140 are arranged at equal intervals along the periphery of the insertion portion 120 so that the pipe 10 can be stably processed.

1 and 2, when the inner side attaching portion 130 and the outer side attaching portion 140 are formed one by one, the inner side attaching portion 130 and the outer side attaching portion 140 are mutually opposed to each other .

3, when the inner side attaching portion 130 and the outer side attaching portion 140 are formed more than two times, the inner side attaching portion 130 and the outer side attaching portion 140 are inserted into the perimeter of the insertion portion 120 And are alternately arranged at equal intervals along the longitudinal direction.

The tool 100 according to the present invention having the above-described structure can simultaneously chamfer the inner edge 11 and the outer edge 12 of the pipe 10, The inner side attaching portion 130 and the outer side attaching portion 140 of each of the cutting edges 132 and 142 of the outer side attaching portion 140 are formed separately from the front end portions of the projecting portions 131 and 141, And are exposed to the outside, the dulled cutting edges 132 and 142 can be easily polished and reused.

Hereinafter, an inner and outer chamfering device of a pipe according to an embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 4, the inner and outer chamfering apparatuses of the present invention include a base frame 200, a support 300, a motor 400, and a chuck 500.

The base frame 200 is in the form of a square table and supports the support 300 and the motor 400.

The support 300 is installed on the upper surface of the base frame 200 to support the pipe 10.

According to the drawings, the support 300 consists of two blocks 301 spaced apart from each other in the back and forth direction to support the two sides of the pipe 10 respectively.

On the upper surface of the two blocks 301 constituting the support 300, a seating groove 310 for supporting the lower surface of the pipe 10 is formed. The seating groove 310 may have a circular arc shape corresponding to the pipe 10, or may have a V-shaped groove.

The motor 400 is installed on the base frame 200 so as to be disposed in front of the support 300. At this time, the motor 400 is disposed such that the rotation axis of the motor 400 faces the support 300, and the center of the rotation axis is aligned with the center of the pipe 10 placed on the support 300.

The chuck 500 is coupled to the rotation axis of the motor 400 so as to be disposed on the same center line as the pipe 10 placed on the support 300.

The chuck 500 may include various types of chucks that can be mounted on the rotating shaft of the motor 400 such as a known drill chuck, collet chuck, scroll chuck, Can be applied.

The chuck 500 and the tool 100 are rotated by the operation of the motor 400. As a result,

The operator presses the pipe 10 downward while pressing the pipe 10 toward the rotating tool 100 in a state in which the pipe 10 is placed on the seating groove 310 of the support 300. As a result, The outer edge 11 and the outer edge 12 can be chamfered at the same time.

At this time, the operator can easily hold the pipe 10 disposed between the two blocks 301 constituting the support 300 and press the pipe 10 toward the tool 100.

Hereinafter, the inner and outer chamfering apparatuses of the pipe according to another embodiment of the present invention will be described with reference to FIG. 5, and the same reference numerals are given to the same constituent elements as those of the previously described embodiment, It will be omitted.

As shown in FIG. 5, the inside and outside chamfering apparatuses of pipes according to another embodiment of the present invention,

A base frame 200;

A support 300 installed on an upper surface of the base frame 200 to support the pipe 10;

A first motor 400A provided above the base frame 200 so as to be disposed in front of the support 300;

A first chuck 500A coupled to the rotation axis of the first motor 400A so as to be disposed on the same center line as the pipe 10 placed on the support 300;

A first linear motion guide 600A interposed between the base frame 200 and the first motor 400A and supporting the first motor 400A so as to be movable toward and away from the support 300;

A first cylinder 700A for advancing and retreating the first motor 400A;

A second motor 400B provided on the upper side of the base frame 200 so as to be disposed behind the support 300;

A second chuck 500B coupled to the rotation axis of the second motor 400B so as to be disposed on the same center line as the pipe 10 placed on the support 300;

A second linear motion guide 600B interposed between the base frame 200 and the second motor 400B and supporting the second motor 400B so as to be movable toward and away from the support 300;

A second cylinder 700B for advancing and retreating the second motor 400B; And

And a surface-bearing tool (100) mounted on the first chuck (500A) and the second chuck (500B), respectively.

As a result, the chamfering apparatus according to another embodiment of the present invention is configured such that the motors 400A, 400B, chucks 500A, 500B and the tool 100 are installed on both the front and rear sides of the support 300, ) Can be chamfered at the same time.

At this time, the chamfering device is provided with switches for operating the first cylinder 700A and the second cylinder 700B, and switches for operating the first motor 400A and the second motor 400B, respectively.

The operator operates the first cylinder 700A and the second cylinder 700B in a state in which the pipe 10 is placed on the support 300 so that the first motor 400A and the second motor 400B support The first motor 400A and the second motor 400B are actuated to chamfer both ends of the pipe 10 placed in the support 300 at the same time.

6, the chamfering apparatus according to another embodiment of the present invention may further include a holding unit 800 for pressing and fixing the pipe 10 placed on the support 300.

The holding unit 800

A lifting cylinder 810 installed on the base frame 200 so that the rod is disposed upward;

A holding member 820 disposed above the seating groove 310 of the support 300; And

And a relay member 830 connecting the rod of the lifting cylinder 810 and the holding member 820.

Here, a switch for its operation is connected to the lifting cylinder 810.

The operator operates the first cylinder 700A and the second cylinder 700B to advance the first motor 400A and the second motor 400B toward the support 300 and then moves the lift cylinder 810, The holding member 820 presses the pipe 10 placed on the support 300 so as to stably fix the pipe 10 before rotating the first motor 400A and the second motor 400B have.

While the present invention has been particularly shown and described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And such variations and modifications are to be construed as being within the scope of protection of the present invention.

100: cotton applicator 110: shank
120: insertion portion 130: inner side mounting
131: first protrusion 132: first cutting edge
140: outer side mounting part 141: second projection
142: second cutting edge 200: base frame
300: Support 301: Block
310: seat groove 400: motor
400A: first motor 400B: second motor
500: Chuck 500A: First Chuck
500B: second chuck 600A: first linear motion guide
600B: second linear motion guide 700A: first cylinder
700B: second cylinder 800: holding unit
810: lifting cylinder 820: holding member
830:

Claims (7)

Shank 110;
An insertion part 120 formed at a front end of the shank 110 and entering the inside of the pipe 10;
A first protrusion 131 protruding from an outer circumferential surface of the rear end of the insert 120 and a first cutting edge 132 formed at a front end of the first protrusion 131 to define an inner edge of the pipe 10 11); And
A second protrusion 141 disposed at an equal interval along the periphery of the insertion portion 120 together with the inner side attachment portion 130 and protruding from the outer peripheral surface of the rear end of the insertion portion 120, And a second cutting edge 142 formed at a front end of the second protrusion 141 to cut the outer edge 12 of the pipe 10. [ And an outer surface tool.
The method according to claim 1,
Wherein the insertion portion (120) is formed to have a circular cross section.
3. The method according to claim 1 or 2,
The first cutting edge 132 is inclined forward from the outer end of the first protrusion 131 toward the inner end,
Wherein the second cutting edge (142) is formed to be inclined rearward from an outer end of the second projection (142) toward an inner end thereof.
A base frame 200;
A support 300 installed on the upper surface of the base frame 200 to support the pipe 10;
A motor 400 installed on the base frame 200 to be disposed in front of the support 300;
A chuck 500 coupled to the rotation axis of the motor 400 so as to be disposed on the same center line as the pipe 10 placed on the support 300; And
(100) of claim 1 mounted on said chuck (500). ≪ Desc / Clms Page number 23 >
A base frame 200;
A support 300 installed on the upper surface of the base frame 200 to support the pipe 10;
A first motor 400A installed above the base frame 200 to be disposed in front of the support 300;
A first chuck 500A coupled to the rotation axis of the first motor 400A so as to be disposed on the same center line as the pipe 10 placed on the support 300;
A first linear motion guide 600A interposed between the base frame 200 and the first motor 400A and supporting the first motor 400A so as to be movable toward and away from the support 300;
A first cylinder 700A for advancing and retreating the first motor 400A;
A second motor (400B) installed on the upper side of the base frame (200) so as to be disposed behind the support (300);
A second chuck 500B coupled to the rotation axis of the second motor 400B so as to be disposed on the same center line as the pipe 10 placed on the support 300;
A second linear motion guide 600B interposed between the base frame 200 and the second motor 400B and supporting the second motor 400B toward and away from the support 300;
A second cylinder 700B for advancing and retreating the second motor 400B; And
The apparatus according to claim 1, further comprising a tool (100) mounted on the first chuck (500A) and the second chuck (500B), respectively.
The method according to claim 4 or 5,
Wherein the support (300) comprises two blocks (301) having a seating groove (310) for supporting the lower surface of the pipe (10) and spaced apart from each other.
The method according to claim 6,
Further comprising a holding unit (800) for pressing and fixing the pipe (10) placed on the support (300)
The holding unit (800)
A lifting cylinder 810 installed on the base frame 200 so that the rod is disposed upward;
A holding member 820 disposed above the seating groove 310 of the support 300; And
And a relay member (830) connecting the rod of the lifting cylinder (810) and the holding member (820).

Images